Installing kernel-<version>.src.rpm under my own build root

[Robert L Cochran]

I have this kernel file downloaded to ~
[rlc at bobcp4 ~]$ ls -al kernel*
-rw-rw-r--  1 rlc rlc 40523094 Jan  9 18:53 kernel-2.6.14-1.1656_FC4.src.rpm

Which I want to install in the rpm build root in my home directory (so 
it is not in /usr/src/redhat/SOURCES):

drwxrwxr-x   7 rlc  rlc       4096 Jan  5 00:36 rpmbuild
-rw-rw-r--   1 rlc  rlc        135 Jan  5 00:36 .rpmmacros

For a kernel build, does doing this make sense? Or should I be 
installing to /usr/src/redhat/SOURCES and /usr/src/redhat/SPECS?

Thanks

Bob Cochran